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1. 发明授权

US08243571B2 Reproduced signal evaluating method, information recording medium, reproducing device, and recording device 有权
标题翻译：再现信号评估方法，信息记录介质，再现装置和记录装置
公开(公告)号：US08243571B2
公开(公告)日：2012-08-14
申请号：US12745297
申请日：2009-09-29
申请人： Kiyotaka Ito , Yasumori Hino , Harumitsu Miyashita , Isao Kobayashi
发明人： Kiyotaka Ito , Yasumori Hino , Harumitsu Miyashita , Isao Kobayashi
IPC分类号： G11B5/09 , G11B20/10 , G11B27/36 , G11B7/0045
CPC分类号： G11B20/1403 , G11B7/0037 , G11B7/00458 , G11B7/005 , G11B7/24038 , G11B20/10009 , G11B20/10055 , G11B20/1012 , G11B20/10287 , G11B20/10296 , G11B20/10407 , G11B20/10481 , G11B20/1049 , G11B20/1816 , G11B2007/0013 , G11B2220/235 , G11B2220/2541
摘要： A reproduction signal evaluation method according to the present invention relates to adjustment of an edge portion between a shortest mark and a shortest space in a data sequence including marks and spaces in combination that is recordable on an information recording medium. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.
摘要翻译：根据本发明的再现信号评估方法涉及在包括可记录在信息记录介质上的组合的数据序列中的最短标记和最短空间之间的边缘部分的调整。在包括最短标记和在最短标记之前或之后相邻的最短空格的图案中，从针对与最短标记相邻的空格的第一图案之一计算的差分度量获得最短标记的边缘的偏移量标记与不相邻的最短空间长于最短空间; 以及第二图案，其中与最短空间相邻并且不与最短标记相邻的标记比最短标记长。

2. 发明授权

US08139305B2 Systems and methods for timing and gain acquisition 有权
标题翻译：用于定时和增益获取的系统和方法
公开(公告)号：US08139305B2
公开(公告)日：2012-03-20
申请号：US12558928
申请日：2009-09-14
申请人： George Mathew , Hongwei Song , Yuan Xing Lee
发明人： George Mathew , Hongwei Song , Yuan Xing Lee
IPC分类号： G11B5/35
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10222 , G11B20/10435 , G11B20/1049 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for acquiring timing and/or gain information. For example, various embodiments of the present invention provide data processing circuits that include a sample splitting circuit, a first averaging circuit, a second averaging circuit and a parameter calculation circuit. The sample splitting circuit receives a data input that includes a series of samples that repeat periodically over at least a first phase and a second phase. The sample splitting circuit divides the series of samples into at least a first sub-stream corresponding to the first phase and a second sub-stream corresponding to the second phase. The first averaging circuit averages values from the first sub-stream to yield a first average, and the second averaging circuit averages values from the second sub-stream to yield a second average. The parameter calculation circuit calculates a parameter value based at least in part on the first average and the second average.
摘要翻译：本发明的各种实施例提供了用于获取定时和/或增益信息的系统和方法。例如，本发明的各种实施例提供了包括采样分离电路，第一平均电路，第二平均电路和参数计算电路的数据处理电路。采样分离电路接收包括在至少第一阶段和第二阶段周期性地重复的一系列样本的数据输入。样本分割电路将该系列样本划分成对应于第一相的至少第一子流和对应于第二相的第二子流。第一平均电路平均来自第一子流的值以产生第一平均值，并且第二平均电路平均来自第二子流的值以产生第二平均值。参数计算电路至少部分地基于第一平均值和第二平均值来计算参数值。

3. 发明申请

US20110063747A1 Systems and Methods for Timing and Gain Acquisition 有权
标题翻译：系统和方法用于计时和增益采集
公开(公告)号：US20110063747A1
公开(公告)日：2011-03-17
申请号：US12558928
申请日：2009-09-14
申请人： George Mathew , Hongwei Song , Yuan Xing Lee
发明人： George Mathew , Hongwei Song , Yuan Xing Lee
IPC分类号： G11B20/10
CPC分类号： G11B20/10009 , G11B20/10027 , G11B20/10222 , G11B20/10435 , G11B20/1049 , G11B2220/2516
摘要： Various embodiments of the present invention provide systems and methods for acquiring timing and/or gain information. For example, various embodiments of the present invention provide data processing circuits that include a sample splitting circuit, a first averaging circuit, a second averaging circuit and a parameter calculation circuit. The sample splitting circuit receives a data input that includes a series of samples that repeat periodically over at least a first phase and a second phase. The sample splitting circuit divides the series of samples into at least a first sub-stream corresponding to the first phase and a second sub-stream corresponding to the second phase. The first averaging circuit averages values from the first sub-stream to yield a first average, and the second averaging circuit averages values from the second sub-stream to yield a second average. The parameter calculation circuit calculates a parameter value based at least in part on the first average and the second average.
摘要翻译：本发明的各种实施例提供了用于获取定时和/或增益信息的系统和方法。例如，本发明的各种实施例提供了包括采样分离电路，第一平均电路，第二平均电路和参数计算电路的数据处理电路。采样分离电路接收包括在至少第一阶段和第二阶段周期性地重复的一系列样本的数据输入。样本分割电路将该系列样本划分成对应于第一相的至少第一子流和对应于第二相的第二子流。第一平均电路平均来自第一子流的值以产生第一平均值，并且第二平均电路平均来自第二子流的值以产生第二平均值。参数计算电路至少部分地基于第一平均值和第二平均值来计算参数值。

4. 发明申请

US20070159948A1 Threshold crossing timing recovery for high capacity optical disc systems 审中-公开
标题翻译：高容量光盘系统的阈值交叉定时恢复
公开(公告)号：US20070159948A1
公开(公告)日：2007-07-12
申请号：US10597759
申请日：2005-02-01
申请人： Bin Yin
发明人： Bin Yin
IPC分类号： G11B20/10
CPC分类号： G11B20/10222 , G11B20/10407 , G11B20/1049 , G11B20/1426 , G11B2220/2541
摘要： The invention relates to a method of providing timing error information in optical systems, especially for reading high capacity optical discs, i.e. optical discs with a capacity of about 27 GB or above. At these capacities current threshold crossing timing recovery does not perform well and even becomes unfeasible due to severe inter-symbol interference. The method suggests using an upper and/or lower secondary eye in the eye diagram of the data signal to acquire the timing error information. Hereby, threshold crossing timing recovery becomes feasible for high capacity optical systems, where the central eye is closed or nearly closed due to the inter-symbol interference.
摘要翻译：本发明涉及一种在光学系统中提供定时误差信息的方法，特别是用于读取高容量光盘，即具有约27GB或更高容量的光盘。在这些容量下，由于严重的符号间干扰，电流阈值交叉定时恢复不能很好地进行，甚至变得不可行。该方法建议在数据信号的眼图中使用上和/或下二次眼来获取定时误差信息。因此，由于符号间干扰，中央眼闭合或近乎闭合的大容量光学系统，阈值交叉定时恢复变得可行。

5. 发明授权

US08762440B2 Systems and methods for area efficient noise predictive filter calibration 有权
标题翻译：用于区域有效噪声预测滤波器校准的系统和方法
公开(公告)号：US08762440B2
公开(公告)日：2014-06-24
申请号：US13180311
申请日：2011-07-11
申请人： Weijun Tan , Kelly Fitzpatrick
发明人： Weijun Tan , Kelly Fitzpatrick
IPC分类号： G06F17/10 , H03H21/00
CPC分类号： H03H21/0012 , G11B20/10203 , G11B20/10296 , G11B20/10472 , G11B20/1049 , G11B2220/2516 , G11B2220/415
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a noise predictive filter circuit, a mean calculation circuit, a summation circuit, and a filter tap adaptation circuit. The noise predictive filter circuit is operable to perform a noise predictive filtering process on a data input based upon a selector input to yield a noise predictive output. The selector input is derived from a data detector output. The mean calculation circuit is operable to average two or more instances of the noise predictive output to yield a mean output. The summation circuit is operable to subtract the mean output from the noise predictive output to yield a sum output. The filter tap adaptation circuit is operable to adaptively calculate a filter tap based at least in part on a value derived from the data input and a value derived from the sum output.
摘要翻译：本发明的各种实施例提供了用于数据处理的系统和方法。作为示例，讨论了包括：噪声预测滤波器电路，平均计算电路，求和电路和滤波器抽头适配电路的数据处理电路。噪声预测滤波器电路可操作以基于选择器输入对数据输入执行噪声预测滤波处理，以产生噪声预测输出。选择器输入是从数据检测器输出导出的。平均计算电路可操作以平均噪声预测输出的两个或多个实例以产生平均输出。求和电路可操作地从噪声预测输出中减去平均输出以产生和输出。滤波器抽头适配电路可操作以至少部分地基于从数据输入导出的值和从和输出导出的值自适应地计算滤波器抽头。

6. 发明申请

US20130016846A1 Systems and Methods for Area Efficient Noise Predictive Filter Calibration 有权
标题翻译：区域高效噪声预测滤波器校准的系统和方法
公开(公告)号：US20130016846A1
公开(公告)日：2013-01-17
申请号：US13180311
申请日：2011-07-11
申请人： Weijun Tan , Kelly Fitzpatrick
发明人： Weijun Tan , Kelly Fitzpatrick
IPC分类号： G10K11/16
CPC分类号： H03H21/0012 , G11B20/10203 , G11B20/10296 , G11B20/10472 , G11B20/1049 , G11B2220/2516 , G11B2220/415
摘要： Various embodiments of the present invention provide systems and methods for data processing. As an example, a data processing circuit is discussed that includes: a noise predictive filter circuit, a mean calculation circuit, a summation circuit, and a filter tap adaptation circuit. The noise predictive filter circuit is operable to perform a noise predictive filtering process on a data input based upon a selector input to yield a noise predictive output. The selector input is derived from a data detector output. The mean calculation circuit is operable to average two or more instances of the noise predictive output to yield a mean output. The summation circuit is operable to subtract the mean output from the noise predictive output to yield a sum output. The filter tap adaptation circuit is operable to adaptively calculate a filter tap based at least in part on a value derived from the data input and a value derived from the sum output.
摘要翻译：本发明的各种实施例提供了用于数据处理的系统和方法。作为示例，讨论了包括：噪声预测滤波器电路，平均计算电路，求和电路和滤波器抽头适配电路的数据处理电路。噪声预测滤波器电路可操作以基于选择器输入对数据输入执行噪声预测滤波处理，以产生噪声预测输出。选择器输入是从数据检测器输出导出的。平均计算电路可操作以平均噪声预测输出的两个或多个实例以产生平均输出。求和电路可操作地从噪声预测输出中减去平均输出以产生和输出。滤波器抽头适配电路可操作以至少部分地基于从数据输入导出的值和从和输出导出的值自适应地计算滤波器抽头。

7. 发明授权

US08102613B2 System, method and apparatus for determining track pitch in a hard disk drive to satisfy the requirements of both off-track capacity and adjacent track erasure 有权
标题翻译：用于确定硬盘驱动器中的磁道间距的系统，方法和装置，以满足偏离轨道容量和相邻轨道擦除的要求
公开(公告)号：US08102613B2
公开(公告)日：2012-01-24
申请号：US12567262
申请日：2009-09-25
申请人： Shanlin Duan , Zhen Jin , Jane Jie Zhang , Kezhao Zhang
发明人： Shanlin Duan , Zhen Jin , Jane Jie Zhang , Kezhao Zhang
IPC分类号： G11B27/36
CPC分类号： G11B20/10009 , G11B5/012 , G11B20/10305 , G11B20/1049 , G11B2020/1238 , G11B2020/1298 , G11B2220/2516
摘要： Track pitch in a hard disk drive is selected to satisfy the requirements of both off-track capacity (OTC) and adjacent track interference (ATI). The invention separately measures the track pitch requirements for OTC and ATI. The track pitch for the drive is set with the larger of the OTC and ATI track pitches. The OTC track pitch is measured with a 747 curve, and the ATI track pitch is measured by the positions of adjacent tracks at which the on-track error rate is not worse than a given value after the targeted number of adjacent track writes in the ATI requirement.
摘要翻译：选择硬盘驱动器中的音高以满足偏离轨道容量（OTC）和相邻轨道干扰（ATI）的要求。本发明分别测量OTC和ATI的轨道间距要求。驱动器的轨道间距用OTC和ATI轨道间距较大设置。使用747曲线测量OTC轨道间距，并且通过在ATI中的目标数量的相邻轨道写入之后轨道误差率不比给定值更差的相邻轨道的位置来测量ATI轨道间距需求。

8. 发明申请

US20110075286A1 SYSTEM, METHOD AND APPARATUS FOR DETERMINING TRACK PITCH IN A HARD DISK DRIVE TO SATISFY THE REQUIREMENTS OF BOTH OFF-TRACK CAPACITY AND ADJACENT TRACK ERASURE 有权
标题翻译：用于确定硬盘驱动器中的轨迹的系统，方法和装置，以满足两个关闭能力和相邻轨迹擦除的要求
公开(公告)号：US20110075286A1
公开(公告)日：2011-03-31
申请号：US12567262
申请日：2009-09-25
申请人： Shanlin Duan , Zhen Jin , Jane Jie Zhang , Kezhao Zhang
发明人： Shanlin Duan , Zhen Jin , Jane Jie Zhang , Kezhao Zhang
IPC分类号： G11B27/36
CPC分类号： G11B20/10009 , G11B5/012 , G11B20/10305 , G11B20/1049 , G11B2020/1238 , G11B2020/1298 , G11B2220/2516
摘要： Track pitch in a hard disk drive is selected to satisfy the requirements of both off-track capacity (OTC) and adjacent track interference (ATI). The invention separately measures the track pitch requirements for OTC and ATI. The track pitch for the drive is set with the larger of the OTC and ATI track pitches. The OTC track pitch is measured with a 747 curve, and the ATI track pitch is measured by the positions of adjacent tracks at which the on-track error rate is not worse than a given value after the targeted number of adjacent track writes in the ATI requirement.
摘要翻译：选择硬盘驱动器中的音高以满足偏离轨道容量（OTC）和相邻轨道干扰（ATI）的要求。本发明分别测量OTC和ATI的轨道间距要求。驱动器的轨道间距用OTC和ATI轨道间距较大设置。使用747曲线测量OTC轨道间距，并且通过在ATI中的目标数量的相邻轨道写入之后轨道误差率不比给定值更差的相邻轨道的位置来测量ATI轨道间距需求。

9. 发明申请

US20100302925A1 REPRODUCED SIGNAL EVALUATING METHOD, INFORMATION RECORDING MEDIUM, REPRODUCING DEVICE, AND RECORDING DEVICE 有权
标题翻译：再现的信号评估方法，信息记录介质，再现装置和记录装置
公开(公告)号：US20100302925A1
公开(公告)日：2010-12-02
申请号：US12745297
申请日：2009-09-29
申请人： Kiyotaka Ito , Yasumori Hino , Harumitsu Miyashita , Isao Kobayashi
发明人： Kiyotaka Ito , Yasumori Hino , Harumitsu Miyashita , Isao Kobayashi
IPC分类号： G11B27/36
CPC分类号： G11B20/1403 , G11B7/0037 , G11B7/00458 , G11B7/005 , G11B7/24038 , G11B20/10009 , G11B20/10055 , G11B20/1012 , G11B20/10287 , G11B20/10296 , G11B20/10407 , G11B20/10481 , G11B20/1049 , G11B20/1816 , G11B2007/0013 , G11B2220/235 , G11B2220/2541
摘要： A reproduction signal evaluation method according to the present invention includes a step of generating a binary signal from an information recording medium on which a data sequence including marks and spaces in combination is recordable, using a PRML signal processing method from a signal obtained by reproducing the data sequence; and a differential calculation step of calculating a differential metric using a first state transition path having a maximum likelihood and a second state transition path having a second maximum likelihood, and a reproduction signal, the first state transition path and the second state transition path being obtained based on the binary signal. In a pattern including a shortest mark and a shortest space adjacent before or after the shortest mark, a shift amount of an edge of the shortest mark is obtained from a differential metric calculated regarding one of a first pattern in which a space adjacent to the shortest mark and not adjacent to the shortest space is longer than the shortest space; and a second pattern in which a mark adjacent to the shortest space and not adjacent to the shortest mark is longer than the shortest mark.
摘要翻译：根据本发明的再现信号评估方法包括从信息记录介质生成二进制信号的步骤，在该信息记录介质上，包括组合的记号和空格的数据序列可记录，使用PRML信号处理方法从通过再现数据序列; 以及差分计算步骤，使用具有最大似然的第一状态转移路径和具有第二最大似然度的第二状态转移路径以及再现信号来计算差分度量，获得第一状态转换路径和第二状态转换路径基于二进制信号。在包括最短标记和在最短标记之前或之后相邻的最短空格的图案中，从针对与最短标记相邻的空格的第一图案之一计算的差分度量获得最短标记的边缘的偏移量标记与不相邻的最短空间长于最短空间; 以及第二图案，其中与最短空间相邻并且不与最短标记相邻的标记比最短标记长。

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